... 2.OEM service provided. 3.Material:200,300,400 series stamping part We produce the raw material in our own company,so ... .1.Material:200,300,400 series2.OEM service provided.3.Surface:bright,polished,turn smooth(peeled),brush,mill,pickled.4.Size ... .5.Used for glass curtain wall6.Quality guarantee of ISOO9001 stamping part